Commit: db695688e9dd6f335ec3b72e77f12bda59cf853d
Author: Kévin Dietrich
Date: Wed Jun 3 19:43:18 2015 +0200
Branches: openvdb
https://developer.blender.org/rBdb695688e9dd6f335ec3b72e77f12bda59cf853d
Quick fix for openvdb::ArithmeticError being thrown on frame 1.
Issue is that the smoke simulator stores a zero'd object matrix on frame
1 which makes OpenVDB throw because the matrix is then non-affine.
Patch by @lukastoenne.
===================================================================
M source/blender/blenkernel/intern/smoke.c
===================================================================
diff --git a/source/blender/blenkernel/intern/smoke.c
b/source/blender/blenkernel/intern/smoke.c
index d922bc8..b8cf5aa 100644
--- a/source/blender/blenkernel/intern/smoke.c
+++ b/source/blender/blenkernel/intern/smoke.c
@@ -3340,6 +3340,20 @@ void smokeModifier_OpenVDB_export(SmokeModifierData
*smd, Scene *scene, Object *
cache_filename(filename, cache->path, cache->name, relbase, fr);
smokeModifier_process(smd, scene, ob, dm, false);
+
+ /* XXX hack: for some reason the smoke sim stores zero matrix
for frame 1 */
+ {
+ PTCacheID pid;
+ int ptcache_start, ptcache_end;
+ float ptcache_timescale;
+ BKE_ptcache_id_from_smoke(&pid, ob, smd);
+ BKE_ptcache_id_time(&pid, scene, fr, &ptcache_start,
&ptcache_end, &ptcache_timescale);
+
+ if (fr == ptcache_start) {
+ unit_m4(sds->obmat);
+ }
+ }
+
OpenVDB_write_fluid_settings(sds, cache->writer);
OpenVDB_export_smoke(sds, cache->writer);
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